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JSON Formatter & Validator

Format, validate, and beautify JSON online. Paste minified or messy JSON and get properly indented, color-highlighted output. Supports sorting keys, minifying, and error detection.

How to Use

  1. Step 1: Paste your raw JSON text into the left input box.
  2. Step 2: Adjust indent size and sort keys options as needed.
  3. Step 3: The formatted result appears on the right. Click the copy button to copy it.

Frequently Asked Questions

What is JSON Prettify?

JSON Prettify (also known as JSON formatter or JSON beautifier) takes minified or unformatted JSON and re-formats it with proper indentation and line breaks, making it easy to read and debug.

What is the difference between JSON prettify and JSON minify?

JSON Prettify adds whitespace and indentation to make JSON human-readable. JSON Minify removes all unnecessary whitespace to reduce file size — useful for APIs and storage.

Does it support JSON5 (comments, trailing commas)?

Yes. This tool uses JSON5 for parsing, so it accepts comments and trailing commas in addition to standard JSON.

How should I efficiently view and process large JSON files?

For JSON files over 1 MB, online tools are not ideal. Recommended alternatives: command-line jq (cat data.json | jq '.') for maximum efficiency; VS Code built-in JSON formatting (Alt+Shift+F); Python built-in (python3 -m json.tool data.json) requires no installation; the fx interactive JSON viewer. For very large JSON files (100 MB+), use a streaming JSON parser to avoid running out of memory.